Gas-engine valve.



D. NIRVIIV.4 GAS ENGINE VALVE. APPLicATloN FILED ssP.1s. wir.

2 SHEETS-SHEET L meme@ Apr. .2 wm

G. n. MARVIN. GAS ENGINE VALVE.

AFPLICATIGN HLED SEPT-.15, 1917. l gg., Patented Apr. 2, 1918 2 SHEETS-SHEET Z.

ventor GARRET D. MARVIN, OF FINDLAY, OHIO.

GAS-ENGINE VALVE.

Specification of Letters Patent.

Patented Apr. 2, 1918.

Application filed. September 15, 1917: Serial No. 191,628.

To all whom. t may concern:

Be it'known that I, Ganinrr D. MARVIN, a citizen oi the United States, residing at Findlay, in the count)1 of Hancock and State' of Ohio, have invented a. new andusetul Gas-Engine Valve, ct which the following is a specification.

rIhe present invention appertains to valves iorengincs, and aims to provide a novel and improved valve structure embodying a ro tary valve member, to control the intake and exhaust without the liability of leakage or other objections incident to the use of puppet valves and the like.

Itis the object ot the invention to provide a valve structure of the nature indicated comprising a novel construction and assemblagc of the component elements, wherebyT the device will be practical and eiiicient in use.

With the foregoing and other objects in View which will appear las the description proceeds, the invention resides in the coinbination and arrangement of parts and in the details ot construction hereinafter described and claiinechit being understood that changes in the precise embodiment of the invention herein-disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein- Figurc 1 is a diametrical section of the vali/"e, taken on the line 1 1 of Fig. 2.

Fig. 2 is a cross section on the line 2-2 of' Fig. 1.

Fig. 3 is a diametrical section on the line 3-3 of Fig. 2, portions being broken away.

Fig. 4: is a bottom plan view, a portion of the valve disk or inenibcrbcing broken away to show the ports,

In carrying ont the invention, there is provided a fiat or disk-shaped head 1 to rest againstmthe outer end of the engine cylinder 2, and said head is provided withan outstanding outer dome or jacket 3, and a marginal outstanding flange i which can bc bolted 'or otherwise fastened to the water jacket 5 of the cylinder 2, similar to the head of an ordinary engine cylinder. The head 1 is provided within the dome or jacket 2S with an inner outstanding dome or casing (3 spaced from the walls of the jacket 3 to provide a water space 7 within the jacket 3 surrounding the casing 6 and extending 8 therein leading to the water space 7 between the jacket 3 and casing 6 and adapted to communicate with the water space 9 of the water jacket 5, for the iioW of Water from the space 9 into the space 7 to cool the valve structure, the jacket 3 having a water outlet port 10 for the flow of water to the radiator after passing around the casing 6. A l

United with the head l, casing 6 and acket 3 centrally thereof, is a tubularbearing or member 11, and the head 1 hap a depending inwardly extending annular Harige or apron 12 to iit snugly within the cylinder 2 when the head is attached thereto. Diametricall opposite radial partitions 13 are provide within the casing 6, being united with said casingghcad 1 and bearing 11, to divide the interior of the casing into opposite arcuate chambers 14, one of which is an intake chamber and the other an exhaust chamber. The walls of the jacket 3 and casing 6 have united therewith, the opposite tubular inembers 15 providing intake and exhaust ports communicating with the chambers 14: through the water space 7 which surrounds the said tubular members.A The head 1 has ports 16 at opposite sides of one partition 13 and communicating with the two chambers 14 for the How of the carburcted air into and the products of combustion out of the cylinder.

A rotary shaft 17 is journaled through the bearing 11, and a rotatable valve member or disk 18 is fitted upon said shaft against the head 1 within the apron 12, and is provided with a port 19 to register in succession with the ports 1G. The ports 16 are so arranged. that when the port 19 registers therewith in succession, this will provide for the intake of carbureted air into and the exhaust of the prmlucts of combustion from the cylinder at the proper time. The disk 18 in fitting against the head 1 will close the ports 16 excepting when the port 19 registcrs therewith. The valve disk 18 has a vhub Q0 secured by means of a pin or otherwiso to thejishat't 17, said hub extendingr awa)y from the head l. The valve disk 18 is rotated in proper timed relation with the over the top thereof. The head l has ponts@ the head 1 to a radial lubricant groove 22 provided in the lower side of the head.- Lubricant can be supplied into the tube 21 from a lubricant cup 22 attached to the upper or outer end thereof, and the lubricant iiowing into the groove 22 will be spread onto the upper surface of the valve disk 18. The Valve disk in rotating, will therefore be lubricated, and the valve will require no grinding, due to the continued rotation thereof. The deposit of carbon will Itherefore not cause the valve to leak, and it will therefore perform its function in a satT isfactory manner. 1

The means illustrated for rotating the shaft 17, embodies a worin Wheel 24 Yfeathered, as at 25, on the shaft 17, and suitable anti-friction means 26 can he provided between the worm. wheel 2t and top of the jacket 3, if desiredn A coiled wire expansion spring 27 is confined between the worm wheel 24 and a nut QS adjustable on the shaft 17., whereby to hold the worm wheel against the jacket 3, and to yieldably move the shaft 17 outwardly, whereby to hold the Valve disk 18 seated against the head 1 snugly. The jacket 3 has a bracket 23 to which the meinen outer terminal of the shaft 17 is journalism, and a drive shaft 30 is jou1'naied,throu 4h the bracket 23v and carries a worm 31 mesning with the worm wheel 24 to rotate the valve shaft or stem 17. f

Having thus described the invention, what is claimed as new is An engine valve embodying a head having an outstanding casing,4 a tubular bearing united with said easing and head, partitions within the casing and providing intake and exhaust chambers therein, the casing and head having intake and exhaust ports cord municating with said chambers, a shaft ein tending through the bearing, an apron on the head and adapted to enter an engine cylinder, and a Valve' disk carried by the shaft turning within the apron and bearing against the head to control the ports thereoi In testimony that I claim the foregoing as my own, I have hereto axed my signature `in the presence of two witnesses.

- f GARRET D. MARVN. `Witnesses y L. HOWARD JONES, J. M,V HALEY.v 

